Grinding or honing device.



J. L. WALKER. GRUNDING 0R HONING DEVICE. APPLICATION FILED DEO.23,-1910.

1,012,772. Patented Deaz, 1911.V -Y l I l 2 SHEETS-SHEET 1.

Qo imm *G luigi@ WITNESSES:

J. L. WALKER.

GRINDING 0R HONING'DEVICB.

APPLlGATIoN FILED DEG. 2a, 1910.

Patented Dec. 26, 1911.

2 SHEETS-SHEET 2.

'om ATTORNEYS JOHN Il. WALKER, OF NEWARK, NEW JERSEY.

G-RINDING OR HONING DEVICE.

Specification of Letters Patent.

Patented Dec. 26, 1911.

Application filed December 23, 1910. Serial No. 599,001.

To all whom 'it may concern:

Be it known that I, JOHN L. WALKER, citizen of the United States,residing at Newark, in the county of Essex and State of New Jersey, haveinvented certain new and useful Improvements in Grinding or HoningDevices; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others [skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, and to characters of referencemarked thereon, which form a part of this specification.

The present invention has reference, generally,'to improvements ingrinding or honing devices; and, the present invention refers, moreparticularly, to a novel grinding or honing device which is particularlyadapted for use and to be connected with leather-splitting machinery forautomatically sharpening or honing the running band or blade, or endlessbelt-knife of the splitting machine.

The invention has for its principal object to provide a simple, and acheaply constructed, as well as an easily attachable grinding or honingdevice, which is compact in its construction, so as to be quicklyattached to any style of leather-splitting machine, or other classes ofmachinery, with the cutting knives of which it may be used forsharpening and honing the same, and especially for removing thefeather-edge from the cutting edge of the knife.

The invention has for a further object to provide a means for easilyadjusting the grinding or honing elements of the device with relation tothe running band or blade of an endless or belt-knife, together withmeans for delicately balancing the said grinding or honing elements, soas to govern its pressure upon said band-blade.

Other objects of the present invention not at this time moreparticularly enumerated, will be clearly understood from the followingdetailed description of this invention.

With the various objects of said invention in view, the same consists,primarily, in the novel construction of grinding or honing devicehereinafter set forth; and, furthermore, this invention consists in theseveral novel arrangements and combinations of the various devices andparts, as well as in the details of the construction thereof, all ofwhich will be hereinafter more fully described, and then finallyembodiedl in the clauses of the claim which are appended to and whichform anA essential part of this specification.

j The invention is clearly illustrated in the accompanying drawings, `inwhich Figure l is a side elevation of a grinding or honing'device, asattached in its operative relation with a portion of a machine, such asa leather-splitting machine, and in contact with the running band orblade of a knife connected therewith; Fig. 2 is a longitudinal verticalsection, and Fig. 3 is a front elevation of the same. Fig. 4 is a detailhorizontal section of the device, said section being taken on line 4 4in said Fig. 2, looking in the direction of' the arrow m.

Similar characters of reference are em'- ployed in all the hereinabovedescribed views, to indicate corresponding parts.

Referring now to the said drawings, the reference-characterl indicates abracket or a part of the framework of a machine, such as aleather-splitting machine, to which the said grinding or honing deviceis attached so as to bring the same into its operative contact with thecutting edge 2 of an endless belt-knife or running band or blade 3 ofthe leather-splitting or other suitable machine. The said grinding orhoning device consists, essentially, of a supporting bracket 4, which isprovided at one end with a receiving socket 5 having connected therewitha set-screw 6. Said receiving socket 5 is adapted to receive theherein-above mentioned bracket l, or other suitable portion of theframework of the machine, for the purpose of retaining said supportingbracket 4 in connection therewith, said set-screw 6 serving -to suitablyfasten or lock the said parts in their assembled and connected relation.Said supporting bracket 4 is provided with an elongated slot or opening7 and arranged so as to project upwardly through said slot or opening 7is a screwthreaded hub or shank 8 of a hanger-like member or element 9,the same being formed with a longitudinally extending tubular part, as10, and with a laterally extending opening 11 intersecting said tubularpart or opening 10, as will be clearly seen from an inspection of Fig. 2of the drawings. Arranged upon the upwardly projecting end of saidscrew-threaded hub or shank 8 is a nut 12 which serves to lock the saidhangerlikey member ory element 9 in any adjusted position within lsaidelongated openingor slot 7, as will be clearly evident. Extendingupwardly through said tubular part or opening of said hanger-like member9y is a screw-threaded rod 13 having arranged upon its screw-threads asuitably formed hand-nut 14. The said nut 14 is arranged in saidlaterally extending opening 11 of said hanger-like member or element 9,in such a 4manner, so as to maintain the said nut' in a rotatablerelation to said hangermember, but fixed against vertical movement, sothat by manipulating or turning the nut, the said screw-threaded rod 13may be raised or lowered to vertically adjust its position, and thedevices supported thereby, with relation to said'hanger-like member 9.Inorder to lock said screw-threaded rod 13 in any adjustedposition, thesame is further provided with a lock-nut15 which engages with the lowerportion of said hangerlike member-9, substantially in 'the manner shown.Supported upon and Vcarried by the lower end of 'said screw-threaded rod13 is a carrier-block 16 which is provided with an elongated opening17,and extending Voutwardly from the marginal edges of said opening 17 are--a'pair of ears or lugs 18, preferably forming an integral part of saidcarrier-block 16.V The said ears or lugs 18 are provided with 'inwardlyprojecting screws 19, and pivotally j ournaled upon the v free ends ofsaid screws 19 is a ring or collar 20. Secured in said ring or collar20, by means of a set-screw 21, is a journalpin 22, and journaled uponthe outer end of said pin 22, so as to swivel thereon, is the hub 23 ofa yoke-like member 24, said member 24 being retained in its operativerelation with said journal-pin 22 by means of a retaining disk 25 whichis secured to the end of said journal-pin 22 by means of a screw 26, orthe like. The freeV ends of the arm of said yoke-like member 24 areprovided with split-collars or socketed portions 27 having perforatedears or lugs 28 in which is operatively arranged a binding or tighteningscrew 29, for drawing the separated portions of said split-collars orsocketed portion27 together, so as to secure a bearing-block 30 rigidlytherein, each bearing-block being provided with a conical depression orbearing-seat 31 in the inner end thereof. Mounted between and inengagement with said bearing-blocks 30 is a spindle or shaft 32, thefree ends of which are provided with conical journal-like members 33,adapted to be seated in said conical depressions or seat 31 of therespective bearing-blocks 30, so that said spindle or shaft 32 may becapable of a free revolving action. Said spindle or shaft 32 is furtherprovided with a shoulder or annular flange 34, and extending 'from saidshoulder or annular flange, toward one end, the said spindleor shaft 32is provided with a screw-thread 35. Mounted upon said screw-threadedportion of said spindle `or shaft, and rigidly connecting the sametherewith, by forcing the same against said shoulder or annular flange34 by means of suitable lock-nuts 36, is a grinding or honing element37, the latter being circular in form and providing grinding or honingportions at its periphery, of any suitable material. The inner end ofsaid j ournal-pin 22, which projects intosaid opening 17 of thecarrierblock 16, is provided with-fa perforated forked end 38, to whichis pivotally secured by means of a pivot or pin 39, suitable ears 40 ofa screw-threaded rod 41. The'said rod 41 extends through a verticalopening 42, in the lower end-portion 43 of said carrier-block V16; and,being slidably or movably arranged therein, is' adapted to be guided inits movements by said vertical opening 42. A nut 44 is arranged uponsaid rod 41 above the said end-portion 43 of saidV carrierblock 16, acoiled spring 45 being mounted upon and encircling said rod 41, betweensaid end-portion 43 of said carrier-block and t-he nut 44, said nut 44serving as a means for increasing or decreasing the operative tension ofsaid spring. In like manner, a

thumb-nut 46 is arranged upon said rod 41,

between its outwardly projecting free .end

and the end-portion 43 of said carrier-block 16. A coiled spring 47 isarranged upon and encircles the said rod'41, between the-endportion 43'of said'car'rier-block 16 and the -v thumb-nut 46, said thumb-nut 46serving as a means for increasing or decreasing the operative tensionof'the said coiled spring. The purpose of said respective springs 45 iooand 47 is to provide a means for creating a v j proper adjustment of thebearing-tension of said grinding or honing element 37, as it bears uponthe freely running band or blade 3 of said splitting knife, to properlyhone its cutting edge'2, without burning orot-herwise injuring the same.The said' coiled spring 45 is adjusted in such a manner to its tension,that it slightly overbalances the tension of the coiled spring 47, thedegree of this overbalancing determining the degree f of pressure withwhich said grinding or honing element 37 bears upon the said cuttingedge 2 of the running band or blade 3; and, as will be clearly evident,a great'delicacy of adjustment in this respect is thus possible. It willbe clearly understood, that the tension of said coiled spring 45',as'thus controlled, is transmitted through the rod 41 and journal-pin 22in the yoke-like member 24 in which said grinding or honing element ismounted. The said grinding or honing element 37 being mounted so Vas torevolve freely, is caused to turn by the onward or forward movement ofsaid belt-like knife or running band or blade 3, as it 'passes in Ycontact therewith, thus causing the guiding or honing element to movetoward and away from said cutting edge 2 of said running lmife, band orblade 3, due to its revolution, thereby producinga peculiarly effect-ivehoning movement or action. Said supporting bracket 4 is also provided atits outer free end with a receiving socket 48 adapted to receive andsupport an oil-cup or reservoir 49. A pipe or duct 50 leads downwardlyfrom said oil-cup or reservoir 48, and is provided with an outlet-dripor nozzle 51, which will feed oil or other lubricant upon the grindingor honing element and the running band or blade 3, as desired, and thuskeeps the same lubricated; and, at the same time, it materially aids inthe proper smooth grinding or honing of the cutting edge 2 of said bandor blade 3.

I claim l. An attachable grinding or honing device comprising alsupporting bracket having an elongated slot, a hanger-like memberadjustably arranged in said slot, a screwthreaded rod carried by saidhanger-like member, means connected with said hangerlike member and saidscrew-threaded rod for vertically adjusting the same, a. carrier-blocksecured upon the lower end of said screwthreaded rod, a revolvinggrinding or honing means pivotally supported by said carrier-block,means for automatically maintaining said grinding or honing means incontact with the cutting edge of a running band or blade with anydesirable degree of pressure, comprising a rod slidably arranged withrelation to said carrier-block and pivotally connected with saidgrinding or honing means, a pair of coiled springs for actuating saidrod, said springs exerting, respectively, opposite tensional pulls uponsaid rod, and means for adjusting the tension of said springs to causethe tension of one of said springs to overbalance the tension of theother spring to any desirable degree, substantially as and for thepurposes set forth.

2. An attachable grinding or honing device comprising a supportingbracket having an elongated slot, a hanger-like member adjustablyarranged in said slot, a screwthreaded -rod carried by said hanger-likemember, means connected with said hangerlike member and saidscrew-threaded rod for vertically adjusting the same, a carrier-blocksecured upon the lower end of said screwthreaded rod, a revolvinggrinding or honing means pivotally supported by said car- I rier-block,means for automatically maintaining said grinding or honing means inContact with the cutting edge of a running band or blade with anydesirable degree of pressure, comprising-a rod slidably arranged withrelation to said carrier-block and pivotally connected with saidgrinding or honing means, a pair of coiled springs for actuating saidrod, said springs exerting, respectively, opposite ytensional pulls uponsaid rod, and meansI Jfor adjusting the tension of said springs to causethe tension of one of said springs to overbalance the tension of theother spring to any desirable degree, consisting of screw-threads formedupon said rod, and nut-s engaging said screw-threads and said coiledsprings, substantially as and for the purposes set forth.

i 3. An attachable grinding or honing device comprising asupporting-bracket, a receiving socket connected with saidsupporting-bracket adapted to serve as means for securing saidsupporting-bracket to a machine, said supporting-bracket being furtherprovided with an elongated slot, a hangerlike member provided with ascrew-threaded hub adapted to be inserted through said elongated slot ofsaid supporting bracket, a nut arranged upon said screw-threaded hub forsecuring said hanger-like member in any desirable adjusted position insaid elongated slot, said hanger-like member being further provided witha vertically disposed opening and a lateral opening intersecting saidvertical opening, a screw-threaded rod slidably arranged in saidvertical opening, a nut upon said screw-threaded rod, said nut beingsupported in said lateral opening and adapt-ed to raise and lower saidscrew-threaded rod when turned, a carrier-block secured upon the lowerend of said screw-threaded rod, a revolving grinding or honing meanspivotally supported by said carrier-block, and means for automaticallymaintaining said grinding or honing means in contact with the cuttingedge of a running band or blade with any desirable degree of pressure,substantially as and for the purposes set forth. In testimony, that Iclaim the invention set forth above I have hereunto set my hand this21st day of Dec. 1910.

FREDK. C. FRAENTZEL, FREDK. H. W. FRAENTZEL.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, ID. C.

